/Engine/Source/Runtime/Experimental/Chaos/Public/GeometryCollection/ManagedArrayCollection.h
Add an external attribute of Type(T) to the group for size management. Lifetime is managed by the caller, must make sure the array is alive when the collection is
template<typename T> void AddExternalAttribute ( [FName](API\Runtime\Core\UObject\FName) Name, [FName](API\Runtime\Core\UObject\FName) Group, [TManagedArray](API\Runtime\Chaos\GeometryCollection\TManagedArray)< T > & ValueIn, [FConstructionParameters](API\Runtime\Chaos\GeometryCollection\FManagedArrayCollection\FConstructionPar-) Parameters )